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Ursa Astronomical Association

Arcus cloud - 9.7.2022 at 23.06 - 9.7.2022 at 23.15 Helsinki Observation number 107587

Visibility IV / V

Tuomas Salo, Ursa (Helsinki)

I photographed the approach of a thunderstorm front, where the boundary between clear weather and shelf-like cloud was clearly visible. After an hour, the thunder started rumbling.

More similar observations
Additional information
  • Observed storm phenomena
    • Shelf cloud info

      Hyllypilvi (engl. shelf cloud) on vyörypilven erikoismuoto. Nimensä mukaisesti se on vaakasuora, hyllyä muistuttava kuuropilven uloke. Se liittyy supersolu-ukkospilviin, joita Suomessa tavataan hyvin harvoin.

      Jarmo Moilasen kuva harvinaisesta hyllypilvestä 13. kesäkuuta 2001 Vaalan taivaalla.

Technical information

Camera Nikon D5100. Lens sigma 10-20mm wide angle.

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